mŏdĕrātrix, īcis, f. [moderator].
I She who moderates or allays; a directress, mistress, governess (mostly Ciceron.): sibi, Plaut. Cist. 2, 2, 3.—
II That which rules, guides, controls , etc.: temperantia est moderatrix omnium commotionum, Cic. Tusc. 5, 14, 42: materiae, id. N. D. 3, 39, 92: factorum, id. Phil. 5, 18, 50: officii, id. Fl. 24, 57.